Ethan Siegel
Ethan Siegel

Ethan Siegel

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The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.

Medium member since February 2019
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Editor of Starts With A Bang!
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Top writer in Science, Space
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59K Followers
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Featured

Ethan Siegel
Nov 20, 2018 · 7 min read

Who Really Discovered The Expanding Universe?

It’s not simply Hubble’s Law anymore, but the real…

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6 responses

Latest

Ethan Siegel
May 20 · 3 min read

Scientists Solve The Mystery Of STEVE, And Find It’s So Much More Than An Aurora

The thin ribbon is a…

253
1 response
Ethan Siegel
May 18 · 10 min read

Ask Ethan: How Well Has Cosmic Inflation Been Verified?

Some claim that inflation isn’t science, but…

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3 responses
Ethan Siegel
May 17 · 9 min read

When Did The Universe Become Transparent To Light?

Depending on how you measure it, there are two…

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